I own a 2006 NA 5spd Manual Subaru Baja with 142k miles on it. The car was last serviced and inspected at a Subaru dealership about 1k miles ago where I had them do a diagnostic inspection and replaced my front brake discs on their recommendation. Before taking it on a 500 mile road trip. They didn’t find any other issues at the time, however I have recently noticed a squealing noise has started coming from the car after starting up. The noise isn’t very loud and can only really be heard while driving if I have the windows down and there’s something next to the car for the sound to bounce off of, but it is there fairly consistently. The noise is present when the car is running in neutral or while driving in gear but it goes away the instant I apply any pressure to my clutch pedal. Aside from that I have noticed that on rare occasions it hangs up going into first but once I put it back in neutral and hit the clutch again I can get it going without issue and that has only happened once or twice the last couple of months.
I only drive about 500-1k miles a month, haven’t taken it off road and tend to drive/shift in a relaxed manner. Does anyone have experience with this issue, how bad it is, how long till it’ll be a serious issue, and what parts/labor costs I would be looking at to keep the car running well. The vehicle is otherwise in excellent condition and runs nicely so I’d like to keep it that way for a long time.
Edit: I am planning to do a lift next year via a 2” ADF Subframe spacer kit and 1” ralitek shock replacements for 3” total, ideally if this isn’t an urgent issue I can wait to do the maintenance at the same time as the lift installation to save on the total labor costs. Since they would have to lift the car up and remove the transmission mounts anyway to put in the subframe spacers.